CN105515262A - Sliding bearing double sealing structure - Google Patents
Sliding bearing double sealing structure Download PDFInfo
- Publication number
- CN105515262A CN105515262A CN201610054921.5A CN201610054921A CN105515262A CN 105515262 A CN105515262 A CN 105515262A CN 201610054921 A CN201610054921 A CN 201610054921A CN 105515262 A CN105515262 A CN 105515262A
- Authority
- CN
- China
- Prior art keywords
- sliding bearing
- seal ring
- packing
- ring
- sealing structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
- H02K5/1675—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at only one end of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
Abstract
The invention relates to the technical field of three-phase asynchronous motors, in particular to a sliding bearing double sealing structure which comprises a bearing inner cover arranged on the end face of the inner side of a sliding bearing. The sliding bearing sleeves a motor rotating shaft. A floating seal ring and a packing seal ring are sequentially arranged between the bearing inner cover and the rotating shaft from outside to inside. The bearing inner cover is provided with an annular groove. The floating seal ring and the packing seal ring are arranged in the annular groove of the bearing inner cover, and the inner surface of the floating seal ring and the inner surface of the packing seal ring are in close contact with the rotating shaft. The sliding bearing double sealing structure is rational in structure and ingenious in design. On the premise of meeting the motor requirements of motor vibration and noise and the like, the narrow floating seal ring and two turns of batched jute packing are additionally arranged at the position of the sliding bearing inner cover, a dustproof baffle ring is added, and the sealing performance of the whole sliding bearing is improved. The sliding circulation oil temperature is protected from rise caused by the influence of internal hot air. The floating seal ring is made of a polyimide abrasion-resistant material, and the service lives of the material and the bearing are prolonged while the sealing performance is improved.
Description
Technical field
The present invention relates to threephase asynchronous technical field, particularly relate to a kind of sliding bearing double sealing structure.
Background technology
Motor uses very general in industrial circle, and bearing is the vitals of motor, and sliding bearing has long service life, the advantage such as reliable is more and more widely used.Because sliding bearing inside and outside differential pressure is large, adopt the bearing shell of forced feed lubrication, lubricating oil itself has certain pressure, when axle runs up, oil can produce bubble (part is from the impact of disc to oil), thus produce certain pressure, motor operationally can produce certain negative pressure due to internal fan effect, thus increases grease chamber's inside and outside differential pressure (interior pressure is greater than external pressure), causes oil leakage phenomenon.When therefore adopting the sliding bearing of forced feed lubrication, how solving its oil leakage phenomenon is projector's urgent problem.
Summary of the invention
The invention provides a kind of sliding bearing double sealing structure, under motor oscillating, noise etc. all meet the requirements of prerequisite, take a series of seal approach, improve sealing and stop sliding bearing leakage of oil, and improve sliding bearing lubricating temperature, whole motor is run and reaches perfect condition.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of sliding bearing double sealing structure, described double sealing structure comprises the internal bearing cover being located at sliding bearing inner side end, described sliding bearing fit is in the rotating shaft of motor, floating seal ring and packing_seal circle is provided with successively along rotating shaft axial direction between described internal bearing cover and rotating shaft, described floating seal ring is between sliding bearing and packing_seal circle, described internal bearing cover is provided with ring-shaped groove, described floating seal ring and packing_seal circle are arranged in the ring-shaped groove of internal bearing cover, the inner surface of described floating seal ring and the inner surface of described packing_seal circle all with rotating shaft close contact.
As further optimization, described internal bearing cover is fixed by screws on sliding bearing, is provided with packing ring between described internal bearing cover and screw.
As further optimization, described internal bearing cover inner side end is also provided with dust-proof baffle ring.
As further optimization, described internal bearing cover diameter of bore 1mm larger than circular diameter in floating seal ring.
As further optimization, described floating seal ring is narrow floating seal ring, and material adopts polyimide wear-resistant material.
As further optimization, the quantity of described packing_seal circle is 2, and described packing_seal circle is spunyarn packing_seal circle.
As further optimization, the inner ring of described dust-proof baffle ring and the cylindrical of rotating shaft are interference fit.
Beneficial effect of the present invention is as follows: the present invention is rational in infrastructure, design ingenious, under motor vibration, noise etc. all meet the requirements of prerequisite, set up narrow floating seal ring and twice spunyarn packing at sliding bearing inner cap place, and increase dust-proof baffle ring, improve the sealing of whole sliding bearing.Because motor is operationally because internal fan effect can produce certain negative pressure, improve the phenomenon that sealing significantly can improve bearing leakage of oil, sealing makes slip circulation oil temperature not raise by internal heat wind effect while improving, narrow floating seal ring adopts polyimide wear-resistant material, the materials'use life-span is extended while improve sealing property, and rationalize arrangement space structure, optimization component installs fixing and manufacture method simultaneously, effectively extends the useful life of bearing.
Accompanying drawing explanation
Fig. 1 is using state sectional structure schematic diagram of the present invention.
In figure: 1-internal bearing cover, 2-floating seal ring, 3-packing_seal circle, the dust-proof baffle ring of 4-, 5-internal fan, 6-rotating shaft, 7-bolt, 8-packing ring.
Embodiment
In order to make content of the present invention more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation.
As shown in Figure 1, a kind of sliding bearing double sealing structure of the present invention, described double sealing structure comprises the internal bearing cover 1 being located at sliding bearing inner side end, described sliding bearing fit is in the rotating shaft 6 of motor, floating seal ring 2 and packing_seal circle 3 is provided with successively along rotating shaft 6 axial direction between described internal bearing cover 1 and rotating shaft 6, described floating seal ring 2 is between sliding bearing and packing_seal circle 3, described internal bearing cover 1 is provided with ring-shaped groove, described floating seal ring 2 and packing_seal circle 3 are arranged in the ring-shaped groove of internal bearing cover 1, the inner surface of described floating seal ring 2 and the inner surface of described packing_seal circle 3 all with rotating shaft 6 close contact, ensure that the reliability of sealing, described internal bearing cover 1 is fixed on sliding bearing by screw 7, is provided with packing ring 8 between described internal bearing cover 1 and screw 7, installs firmly, convenient disassembly, described internal bearing cover 1 inner side end is provided with dust-proof baffle ring 4, further increases the sealing of sliding bearing, described internal bearing cover 1 diameter of bore 1mm larger than circular diameter in floating seal ring 2, described floating seal ring 2 is narrow floating seal ring, and material adopts polyimide wear-resistant material, does not allow to use polytetrafluoroethylmaterial material, extends the useful life of sealing ring while improve sealing property, the quantity of described packing_seal circle 3 is 2, and described packing_seal circle 3 is spunyarn packing_seal circle, described dust-proof baffle ring 4 and internal fan 5 are arranged in rotating shaft 6 by hot cover process, and dust-proof baffle ring 4, internal fan 5 adopt interference fit with rotating shaft 6, meet reliability when motor runs up.
When the present invention uses, after electric motor starting, dust-proof baffle ring 4, internal fan 5 are followed rotating shaft 6 and are rotated together, internal fan 5 produces negative pressure, the floating seal ring 2 be arranged in internal bearing cover 1 ring-shaped groove does not rotate with rotating shaft 6 with packing_seal circle 3, and internal bearing cover 1 diameter of bore 1mm larger than circular diameter in floating seal ring 2, ensure that sealing is reliable, improve the sealing of sliding bearing, make interior oil not because of internal fan 5 produce negative pressure and leakage of oil.
The theoretical analysis and experimental study prove, sliding bearing adopts double sealing structure, and bearing oil leakage phenomenon disappears substantially, and sealing makes slip circulation oil temperature not raise by internal heat wind effect while improving.Our factory is by same model motor contrast test, and sliding bearing adopts double sealing structure than oil temperature when not adopting this structure obviously to be reduced, and proves that this structure is very effective.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a sliding bearing double sealing structure, it is characterized in that: described double sealing structure comprises the internal bearing cover (1) being located at sliding bearing inner side end, described sliding bearing fit is in the rotating shaft (6) of motor, floating seal ring (2) and packing_seal circle (3) is provided with successively along rotating shaft (6) axial direction between described internal bearing cover (1) and rotating shaft (6), described floating seal ring (2) is positioned between sliding bearing and packing_seal circle (3), described internal bearing cover (1) is provided with ring-shaped groove, described floating seal ring (2) and packing_seal circle (3) are arranged in the ring-shaped groove of internal bearing cover (1), the inner surface of described floating seal ring (2) and the inner surface of described packing_seal circle (3) all with rotating shaft (6) close contact.
2. a kind of sliding bearing double sealing structure according to claim 1, it is characterized in that: described internal bearing cover (1) is fixed on sliding bearing by screw (7), between described internal bearing cover (1) and screw (7), be provided with packing ring (8).
3. a kind of sliding bearing double sealing structure according to claim 1, is characterized in that: described internal bearing cover (1) inner side end is provided with dust-proof baffle ring (4).
4. a kind of sliding bearing double sealing structure according to claim 1, is characterized in that: described internal bearing cover (1) diameter of bore 1mm larger than floating seal ring (2) interior circular diameter.
5. a kind of sliding bearing double sealing structure according to claim 1, is characterized in that: described floating seal ring (2) is narrow floating seal ring, and material adopts polyimide wear-resistant material.
6. a kind of sliding bearing double sealing structure according to claim 1, is characterized in that: the quantity of described packing_seal circle (3) is 2, and described packing_seal circle (3) is spunyarn packing_seal circle.
7. a kind of sliding bearing double sealing structure according to claim 3, is characterized in that: the inner ring of described dust-proof baffle ring (4) and the cylindrical of rotating shaft (6) are interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610054921.5A CN105515262A (en) | 2016-01-27 | 2016-01-27 | Sliding bearing double sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610054921.5A CN105515262A (en) | 2016-01-27 | 2016-01-27 | Sliding bearing double sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105515262A true CN105515262A (en) | 2016-04-20 |
Family
ID=55723009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610054921.5A Pending CN105515262A (en) | 2016-01-27 | 2016-01-27 | Sliding bearing double sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105515262A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286606A (en) * | 2016-10-20 | 2017-01-04 | 陈雪刚 | End bracket type bearing |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4413394A1 (en) * | 1994-04-18 | 1995-10-19 | Schmidt & Co Gmbh Kranz | Bearing for piston rod of hydraulic cylinder |
| CN200999800Y (en) * | 2006-06-27 | 2008-01-02 | 王澍 | End cap type slide bearing |
| CN201341050Y (en) * | 2008-12-31 | 2009-11-04 | 无锡哈电电机有限公司 | Oil seal structure of unidirectional rotary high-speed motor sliding bearing |
| CN202687502U (en) * | 2012-08-15 | 2013-01-23 | 陈宏春 | Screw pneumatic conveying pump |
| CN202812203U (en) * | 2012-09-10 | 2013-03-20 | 申科滑动轴承股份有限公司 | Oil mist-prevention air seal structure for sliding bearing |
| CN102983663A (en) * | 2012-11-30 | 2013-03-20 | 南阳防爆集团股份有限公司 | Self-lubricating sliding bearing for high-speed large-power motor |
| CN203655422U (en) * | 2014-01-07 | 2014-06-18 | 重庆江增机械有限公司 | Turbocharger vortex end combined sealing structure |
| CN104963947A (en) * | 2015-06-29 | 2015-10-07 | 申科滑动轴承股份有限公司 | Novel oil-ring lubrication end-cover type sliding bearing with heat-tube heat exchanger |
| CN205377534U (en) * | 2016-01-27 | 2016-07-06 | 中电电机股份有限公司 | Slide bearing dual -seal structure |
-
2016
- 2016-01-27 CN CN201610054921.5A patent/CN105515262A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4413394A1 (en) * | 1994-04-18 | 1995-10-19 | Schmidt & Co Gmbh Kranz | Bearing for piston rod of hydraulic cylinder |
| CN200999800Y (en) * | 2006-06-27 | 2008-01-02 | 王澍 | End cap type slide bearing |
| CN201341050Y (en) * | 2008-12-31 | 2009-11-04 | 无锡哈电电机有限公司 | Oil seal structure of unidirectional rotary high-speed motor sliding bearing |
| CN202687502U (en) * | 2012-08-15 | 2013-01-23 | 陈宏春 | Screw pneumatic conveying pump |
| CN202812203U (en) * | 2012-09-10 | 2013-03-20 | 申科滑动轴承股份有限公司 | Oil mist-prevention air seal structure for sliding bearing |
| CN102983663A (en) * | 2012-11-30 | 2013-03-20 | 南阳防爆集团股份有限公司 | Self-lubricating sliding bearing for high-speed large-power motor |
| CN203655422U (en) * | 2014-01-07 | 2014-06-18 | 重庆江增机械有限公司 | Turbocharger vortex end combined sealing structure |
| CN104963947A (en) * | 2015-06-29 | 2015-10-07 | 申科滑动轴承股份有限公司 | Novel oil-ring lubrication end-cover type sliding bearing with heat-tube heat exchanger |
| CN205377534U (en) * | 2016-01-27 | 2016-07-06 | 中电电机股份有限公司 | Slide bearing dual -seal structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286606A (en) * | 2016-10-20 | 2017-01-04 | 陈雪刚 | End bracket type bearing |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160420 |